use phoenix endpoint if available

[gordoneliel]

Whats new

Uses phoenix_endpoint for link url generation if present in the conn.

Fixes https://github.com/ash-project/ash_json_api/issues/94

Contributor checklist

• [x] Bug fixes include regression tests
• [x] Features include unit/acceptance tests

[zachdaniel]

LGTM, let me know if its ready to merge :)

[gordoneliel]

@zachdaniel Added a test. BTW seems a bit hacky referencing phoenix_endpoint here when we don't explicitly depend on phoenix? Also assumes there will be a .url() function in that module. Probably a better way with a callback or config of some sort in the future, thoughts?

[zachdaniel]

It's a bit weird but it's better than something more complex IMO

[gordoneliel]

@zachdaniel In a stalemate here. mix format requires parenthesis on the function call, credo does not want it

[zachdaniel]

Will take care of it, not sure what's up :)